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Diffstat (limited to 'busybox/networking/tftp.c')
-rw-r--r--busybox/networking/tftp.c383
1 files changed, 0 insertions, 383 deletions
diff --git a/busybox/networking/tftp.c b/busybox/networking/tftp.c
deleted file mode 100644
index 999b5d706..000000000
--- a/busybox/networking/tftp.c
+++ /dev/null
@@ -1,383 +0,0 @@
-/* ------------------------------------------------------------------------- */
-/* tftp.c */
-/* */
-/* A simple tftp client for busybox. */
-/* Tries to follow RFC1350. */
-/* Only "octet" mode and 512-byte data blocks are supported. */
-/* */
-/* Copyright (C) 2001 Magnus Damm <damm@opensource.se> */
-/* */
-/* Parts of the code based on: */
-/* */
-/* atftp: Copyright (C) 2000 Jean-Pierre Lefebvre <helix@step.polymtl.ca> */
-/* and Remi Lefebvre <remi@debian.org> */
-/* */
-/* utftp: Copyright (C) 1999 Uwe Ohse <uwe@ohse.de> */
-/* */
-/* This program is free software; you can redistribute it and/or modify */
-/* it under the terms of the GNU General Public License as published by */
-/* the Free Software Foundation; either version 2 of the License, or */
-/* (at your option) any later version. */
-/* */
-/* This program is distributed in the hope that it will be useful, */
-/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
-/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU */
-/* General Public License for more details. */
-/* */
-/* You should have received a copy of the GNU General Public License */
-/* along with this program; if not, write to the Free Software */
-/* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
-/* */
-/* ------------------------------------------------------------------------- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-#include <sys/stat.h>
-#include <netdb.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <unistd.h>
-#include <fcntl.h>
-
-#include "busybox.h"
-
-//#define BB_FEATURE_TFTP_DEBUG
-
-static const char *tftp_error_msg[] = {
- "Undefined error",
- "File not found",
- "Access violation",
- "Disk full or allocation error",
- "Illegal TFTP operation",
- "Unknown transfer ID",
- "File already exists",
- "No such user"
-};
-
-const int tftp_cmd_get = 1;
-const int tftp_cmd_put = 2;
-
-static inline int tftp(const int cmd, const struct hostent *host,
- const char *serverfile, int localfd, const int port, int tftp_bufsize)
-{
- const int cmd_get = cmd & tftp_cmd_get;
- const int cmd_put = cmd & tftp_cmd_put;
- const int bb_tftp_num_retries = 5;
-
- struct sockaddr_in sa;
- struct sockaddr_in from;
- struct timeval tv;
- socklen_t fromlen;
- fd_set rfds;
- char *cp;
- unsigned short tmp;
- int socketfd;
- int len;
- int opcode = 0;
- int finished = 0;
- int timeout = bb_tftp_num_retries;
- int block_nr = 1;
- RESERVE_BB_BUFFER(buf, tftp_bufsize + 4); // Why 4 ?
-
- tftp_bufsize += 4;
-
- if ((socketfd = socket(PF_INET, SOCK_DGRAM, 0)) < 0) {
- perror_msg("socket");
- return EXIT_FAILURE;
- }
-
- len = sizeof(sa);
-
- memset(&sa, 0, len);
- bind(socketfd, (struct sockaddr *)&sa, len);
-
- sa.sin_family = host->h_addrtype;
- sa.sin_port = htons(port);
- memcpy(&sa.sin_addr, (struct in_addr *) host->h_addr,
- sizeof(sa.sin_addr));
-
- /* build opcode */
-
- if (cmd_get) {
- opcode = 1; // read request = 1
- }
-
- if (cmd_put) {
- opcode = 2; // write request = 2
- }
-
- while (1) {
-
-
- /* build packet of type "opcode" */
-
-
- cp = buf;
-
- *((unsigned short *) cp) = htons(opcode);
-
- cp += 2;
-
- /* add filename and mode */
-
- if ((cmd_get && (opcode == 1)) || // read request = 1
- (cmd_put && (opcode == 2))) { // write request = 2
-
- /* what is this trying to do ? */
- while (cp != &buf[tftp_bufsize - 1]) {
- if ((*cp = *serverfile++) == '\0')
- break;
- cp++;
- }
- /* and this ? */
- if ((*cp != '\0') || (&buf[tftp_bufsize - 1] - cp) < 7) {
- error_msg("too long server-filename");
- break;
- }
-
- memcpy(cp + 1, "octet", 6);
- cp += 7;
- }
-
- /* add ack and data */
-
- if ((cmd_get && (opcode == 4)) || // acknowledgement = 4
- (cmd_put && (opcode == 3))) { // data packet == 3
-
- *((unsigned short *) cp) = htons(block_nr);
-
- cp += 2;
-
- block_nr++;
-
- if (cmd_put && (opcode == 3)) { // data packet == 3
- len = read(localfd, cp, tftp_bufsize - 4);
-
- if (len < 0) {
- perror_msg("read");
- break;
- }
-
- if (len != (tftp_bufsize - 4)) {
- finished++;
- }
-
- cp += len;
- } else if (finished) {
- break;
- }
- }
-
-
- /* send packet */
-
-
- do {
-
- len = cp - buf;
-
-#ifdef BB_FEATURE_TFTP_DEBUG
- printf("sending %u bytes\n", len);
- for (cp = buf; cp < &buf[len]; cp++)
- printf("%02x ", *cp);
- printf("\n");
-#endif
- if (sendto(socketfd, buf, len, 0,
- (struct sockaddr *) &sa, sizeof(sa)) < 0) {
- perror_msg("send");
- len = -1;
- break;
- }
-
-
- /* receive packet */
-
-
- memset(&from, 0, sizeof(from));
- fromlen = sizeof(from);
-
- tv.tv_sec = 5; // BB_TFPT_TIMEOUT = 5
- tv.tv_usec = 0;
-
- FD_ZERO(&rfds);
- FD_SET(socketfd, &rfds);
-
- switch (select(FD_SETSIZE, &rfds, NULL, NULL, &tv)) {
- case 1:
- len = recvfrom(socketfd, buf, tftp_bufsize, 0,
- (struct sockaddr *) &from, &fromlen);
-
- if (len < 0) {
- perror_msg("recvfrom");
- break;
- }
-
- timeout = 0;
-
- if (sa.sin_port == htons(port)) {
- sa.sin_port = from.sin_port;
- }
- if (sa.sin_port == from.sin_port) {
- break;
- }
-
- /* fall-through for bad packets! */
- /* discard the packet - treat as timeout */
- timeout = bb_tftp_num_retries;
-
- case 0:
- error_msg("timeout");
-
- if (timeout == 0) {
- len = -1;
- error_msg("last timeout");
- } else {
- timeout--;
- }
- break;
-
- default:
- perror_msg("select");
- len = -1;
- }
-
- } while (timeout && (len >= 0));
-
- if (len < 0) {
- break;
- }
-
- /* process received packet */
-
-
- opcode = ntohs(*((unsigned short *) buf));
- tmp = ntohs(*((unsigned short *) &buf[2]));
-
-#ifdef BB_FEATURE_TFTP_DEBUG
- printf("received %d bytes: %04x %04x\n", len, opcode, tmp);
-#endif
-
- if (cmd_get && (opcode == 3)) { // data packet == 3
-
- if (tmp == block_nr) {
- len = write(localfd, &buf[4], len - 4);
-
- if (len < 0) {
- perror_msg("write");
- break;
- }
-
- if (len != (tftp_bufsize - 4)) {
- finished++;
- }
-
- opcode = 4; // acknowledgement = 4
- continue;
- }
- }
-
- if (cmd_put && (opcode == 4)) { // acknowledgement = 4
-
- if (tmp == (block_nr - 1)) {
- if (finished) {
- break;
- }
-
- opcode = 3; // data packet == 3
- continue;
- }
- }
-
- if (opcode == 5) { // error code == 5
- char *msg = NULL;
-
- if (buf[4] != '\0') {
- msg = &buf[4];
- buf[tftp_bufsize - 1] = '\0';
- } else if (tmp < (sizeof(tftp_error_msg) / sizeof(char *))) {
- msg = (char *) tftp_error_msg[tmp];
- }
-
- if (msg) {
- error_msg("server says: %s", msg);
- }
-
- break;
- }
- }
-
- close(socketfd);
-
- return finished ? EXIT_SUCCESS : EXIT_FAILURE;
-}
-
-int tftp_main(int argc, char **argv)
-{
- struct hostent *host = NULL;
- char *localfile = NULL;
- char *remotefile = NULL;
- int port = 69;
- int cmd = 0;
- int fd = -1;
- int flags = 0;
- int opt;
- int result;
- int blocksize = 512;
-
- while ((opt = getopt(argc, argv, "b:gpl:r:")) != -1) {
- switch (opt) {
- case 'b':
- blocksize = atoi(optarg);
- break;
-#ifdef BB_FEATURE_TFTP_GET
- case 'g':
- cmd = tftp_cmd_get;
- flags = O_WRONLY | O_CREAT;
- break;
-#endif
-#ifdef BB_FEATURE_TFTP_PUT
- case 'p':
- cmd = tftp_cmd_put;
- flags = O_RDONLY;
- break;
-#endif
- case 'l':
- localfile = xstrdup(optarg);
- break;
- case 'r':
- remotefile = xstrdup(optarg);
- break;
- }
- }
-
- if ((cmd == 0) || (optind == argc)) {
- show_usage();
- }
-
- fd = open(localfile, flags, 0644);
- if (fd < 0) {
- perror_msg_and_die("local file");
- }
-
- host = xgethostbyname(argv[optind]);
-
- if (optind + 2 == argc) {
- port = atoi(argv[optind + 1]);
- }
-
-#ifdef BB_FEATURE_TFTP_DEBUG
- printf("using server \"%s\", serverfile \"%s\","
- "localfile \"%s\".\n",
- inet_ntoa(*((struct in_addr *) host->h_addr)),
- remotefile, localfile);
-#endif
-
- result = tftp(cmd, host, remotefile, fd, port, blocksize);
- close(fd);
-
- return(result);
-} \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-02 10:13:30 +0300